Winter's Grasp

You create a massive hand of ice that reaches out from the ground to grasp a creature you can see within range. The target must make a Strength saving throw. On a failed save, the creature takes 6d10 cold damage and is restrained as the icy hand holds it in place. On a successful save, the creature takes half as much damage and isn't restrained. While restrained by this spell, the creature takes 3d10 cold damage at the start of each of its turns. The creature can make another Strength saving throw at the end of each of its turns, ending the effect on itself on a success.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, you can target one additional creature for each slot level above 4th. The creatures must be within 45 feet of each other when you target them. When you cast this spell using a spell slot of 5th level or higher, the damage increases by 1d10 for each slot level above 4th.